BC847BLT3 Equivalent & Substitute Parts

Part Overview

The BC847BLT3 is an NPN bipolar junction transistor manufactured by onsemi, rated for 45 V collector-emitter breakdown voltage and 100 mA maximum collector current in a surface mount SOT-23-3 package. This part is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. Active alternatives with identical or superior electrical characteristics are available from multiple manufacturers, enabling seamless integration into existing and new applications.

Key Parameters

Parameter	BC847BLT3 Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	45	V
Current - Collector (Ic) (Max)	100	mA
Vce Saturation (Max) @ Ib, Ic	600 mV @ 5 mA, 100 mA	—
Current - Collector Cutoff (Max)	15	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	200 @ 2 mA, 5 V	—
Power - Max	300	mW
Frequency - Transition	100	MHz
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOT-23-3 (TO-236)	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BC847BLT3 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Transistor Type: NPN
Voltage - Collector Emitter Breakdown (Max): 45 V or higher
Current - Collector (Ic) (Max): 100 mA or higher
DC Current Gain (hFE) (Min): 200 or higher at specified test conditions
Mounting Type: Surface Mount
Package / Case: SOT-23-3 (TO-236) or compatible footprint
Frequency - Transition: 100 MHz or higher
Power - Max: 300 mW or higher

Acceptable Variation Parameters:

Vce Saturation: May vary within application tolerance
Current - Collector Cutoff: May vary within application tolerance
Operating Temperature Range: May extend beyond original specification
RoHS Status: Active substitutes are RoHS3 compliant
Product Status: Active substitutes replace obsolete original

Substitutes are grouped into three categories: Direct Equivalents (identical electrical specifications and packaging), Parametric Equivalents (matching all critical parameters with minor specification improvements), and Upgrades (enhanced specifications suitable for the same application).

Parameter Comparison

Part Number	Manufacturer	Product Status	Vce Breakdown (V)	Ic Max (mA)	hFE Min @ Ic, Vce	Power Max (mW)	Freq Trans (MHz)	Temp Range (°C)	Package	RoHS
BC847BLT3	onsemi	Obsolete	45	100	200 @ 2mA, 5V	300	100	-55 to 150	SOT-23-3	Non-compliant
BC847BLT3G	onsemi	Active	45	100	200 @ 2mA, 5V	300	100	-55 to 150	SOT-23-3	ROHS3 Compliant
BC847BLT1G	onsemi	Active	45	100	200 @ 2mA, 5V	300	100	-55 to 150	SOT-23-3	ROHS3 Compliant
SBC847BLT1G	onsemi	Active	45	100	200 @ 2mA, 5V	300	100	-55 to 150	SOT-23-3	ROHS3 Compliant
BC847B,215	Nexperia USA Inc.	Active	45	100	200 @ 2mA, 5V	250	100	-55 to 150	TO-236AB	ROHS3 Compliant
BC847B-7-F	Diodes Incorporated	Active	45	100	200 @ 2mA, 5V	300	300	-65 to 150	SOT-23-3	ROHS3 Compliant
BC847B,235	Nexperia USA Inc.	Active	45	100	200 @ 2mA, 5V	250	100	-55 to 150	TO-236AB	ROHS3 Compliant
2PD601ARL,215	Nexperia USA Inc.	Active	50	100	210 @ 2mA, 10V	250	100	-55 to 150	TO-236AB	ROHS3 Compliant
2PD601ARL,235	Nexperia USA Inc.	Active	50	100	210 @ 2mA, 10V	250	100	-55 to 150	TO-236AB	ROHS3 Compliant
2PD601ART,215	Nexperia USA Inc.	Active	50	100	210 @ 2mA, 10V	250	100	-55 to 150	TO-236AB	ROHS3 Compliant
2PD601ART,235	Nexperia USA Inc.	Active	50	100	210 @ 2mA, 10V	250	100	-55 to 150	TO-236AB	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (Recommended for Immediate Replacement):

BC847BLT3G and BC847BLT1G from onsemi provide identical electrical specifications to the obsolete BC847BLT3 with the addition of RoHS3 compliance. Both parts maintain the 45 V breakdown voltage, 100 mA collector current, 300 mW power dissipation, and 100 MHz transition frequency. These parts are manufactured by the original equipment supplier and are available in active production status with substantial inventory. BC847BLT3G is supplied in Cut Tape and Digi-Reel packaging, while BC847BLT1G offers the same packaging options with higher inventory availability (125,200 units).

Automotive-Grade Equivalent:

SBC847BLT1G from onsemi is an automotive-qualified variant (AEC-Q101) with identical electrical specifications. This part is suitable for applications requiring automotive-grade components and carries RoHS3 compliance. The "S" prefix designates automotive qualification.

Cross-Manufacturer Equivalents:

BC847B,215 and BC847B,235 from Nexperia USA Inc. are active production parts with matching 45 V breakdown voltage and 100 mA collector current. These parts differ in power dissipation (250 mW versus 300 mW) and are supplied in TO-236AB packaging. Both variants are AEC-Q101 qualified and RoHS3 compliant.

BC847B-7-F from Diodes Incorporated offers enhanced transition frequency (300 MHz versus 100 MHz) and extended low-temperature operating range (-65°C versus -55°C). This part maintains 45 V breakdown voltage, 100 mA collector current, and 300 mW power dissipation in SOT-23-3 packaging with RoHS3 compliance.

Upgrade Options (Enhanced Specifications):

2PD601ARL,215, 2PD601ARL,235, 2PD601ART,215, and 2PD601ART,235 from Nexperia USA Inc. provide upgraded specifications with 50 V collector-emitter breakdown voltage (versus 45 V) and slightly higher DC current gain (210 versus 200). These parts are AEC-Q101 qualified and RoHS3 compliant. The 2PD601ART variants feature higher collector cutoff current (100 nA versus 10 nA) and are supplied in Tape & Reel packaging.

Compliance Considerations:

All recommended substitutes are RoHS3 compliant, addressing environmental regulatory requirements. The original BC847BLT3 is RoHS non-compliant; transition to compliant alternatives is necessary for new designs and ongoing procurement. Automotive applications should specify SBC847BLT1G or BC847B variants with AEC-Q101 qualification.

Frequently Asked Questions (FAQ)

Q: Can BC847BLT3G directly replace BC847BLT3 in existing designs?

A: Yes. BC847BLT3G is electrically and mechanically identical to BC847BLT3, with the addition of RoHS3 compliance. No circuit modifications are required. Both parts are supplied in SOT-23-3 packaging with identical pin configuration and electrical performance.

Q: What is the difference between BC847BLT3G and BC847BLT1G?

A: Both parts are parametric equivalents with identical electrical specifications and RoHS3 compliance. The primary difference is inventory availability and packaging designation. BC847BLT1G has significantly higher stock levels (125,200 units versus 10,300 units) and is recommended for applications with extended lead time requirements.

Q: Is SBC847BLT1G suitable for non-automotive applications?

A: Yes. SBC847BLT1G meets all electrical requirements for general-purpose applications. The automotive qualification (AEC-Q101) represents an additional quality assurance level and does not restrict use in non-automotive designs. This part is interchangeable with BC847BLT1G from an electrical standpoint.

Q: How does BC847B-7-F from Diodes Incorporated differ from onsemi equivalents?

A: BC847B-7-F offers enhanced transition frequency (300 MHz versus 100 MHz) and extended low-temperature operating range (-65°C to 150°C versus -55°C to 150°C). The 45 V breakdown voltage and 100 mA collector current remain identical. This part is suitable for high-frequency applications and environments requiring extended temperature performance.

Q: Can 2PD601 series parts replace BC847BLT3?

A: Yes, with design consideration. The 2PD601 series provides upgraded specifications: 50 V breakdown voltage (versus 45 V) and 210 minimum DC current gain (versus 200). These enhancements make 2PD601 parts suitable for applications requiring higher voltage margin or improved gain characteristics. The 250 mW power rating (versus 300 mW) is acceptable for most applications but should be verified against circuit requirements.

Q: What packaging options are available for BC847 substitutes?

A: onsemi supplies BC847BLT3G and BC847BLT1G in SOT-23-3 (TO-236) packaging with Cut Tape and Digi-Reel options. Nexperia supplies BC847B variants in TO-236AB packaging. Diodes Incorporated supplies BC847B-7-F in SOT-23-3 packaging. All packages are mechanically compatible with the original BC847BLT3 SOT-23-3 footprint.

Q: Are there inventory constraints for recommended substitutes?

A: No. All recommended substitutes are in active production with substantial inventory. BC847BLT1G has the highest availability (125,200 units), followed by BC847B,215 from Nexperia (129,300 units) and BC847B-7-F from Diodes (131,400 units). The original BC847BLT3 has limited inventory (782 units) and is classified as obsolete.

Q: Which substitute is recommended for new designs?

A: BC847BLT1G from onsemi is recommended for new designs. This part provides identical electrical specifications to the original BC847BLT3, RoHS3 compliance, active production status, and the highest inventory availability. For automotive applications, SBC847BLT1G is the preferred choice due to AEC-Q101 qualification.

Q: Do substitute parts require circuit board layout modifications?

A: No. All recommended substitutes maintain the SOT-23-3 or TO-236AB package footprint, which are mechanically and electrically compatible. No PCB layout changes are required for direct substitution.

Q: What is the significance of the packaging designations (,215 and ,235)?

A: The numeric suffixes (,215 and ,235) indicate different packaging and reel configurations supplied by Nexperia. Both designations represent the same electrical part with different distribution formats. Selection between these variants depends on procurement and assembly requirements rather than electrical performance.

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